By Paul Shalala: Former United Party for National Development -UPND- Chairperson for Labour, Gabriel Namulambe has defected to the Patriotic Front. Mr. Namulambe, a former Member of Parliament for Mpongwe, says he has decided to ditch the opposition party citing lack of leadership and no vision in the party. Speaking in Lufwanyama, Mr. Namulambe, who…